So I’ve fixed my fuel delivery issues (P0183/p0193), corroded connections, and now this. IAT sensor circuit high. I need the Pinpoint test for code P0113. With the KOEO, I’m getting 8-9 volts to pin 6 but I don’t know if that’s the pin I should be checking. Please help! Thanks

 

P0113 - Intake Air Temperature (IAT) Sensor 1 Circuit High

Description: Indicates the sensor signal is greater than the self-test maximum. The IAT sensor maximum is 4.6 volts or -50°C (-58°F). Possible Causes:

• Open circuit in the harness
• Sensor signal short to voltage
• Damaged sensor
• Incorrect harness connection

Diagnostic Aids: An IAT PID reading greater than 4.6 volts with the ignition ON engine OFF or during any engine operating mode indicates a concern is present. Application Key On Engine Off Key On Engine Running Continuous Memory All

Use Pinpoint Test DA

 

here’s what I did:

1. DA2 with KOEO, measure voltage from IAT pin 1 and ground. is voltage between 4.5-5.5? Yes (5.42v)
2. DA3 with Key off, and sensor disconnected, measure resistance between IAT and SIGRTN on the sensor itself. Is resistance between 1k-500k ohms? No (O/L)
3. Replace MAF/IAT sensor.

I replaced the MAF. And the resistance corresponding to pin 1 and pin 2 still showed O/L. And I’m getting the same symptoms with the same P0113 code. It’s possible the sensor is shorted right out of the box. It’s also likely, that I’m testing the wrong pins. Pin 1 on the connector should correspond to pin 1 on the sensor, correct?

Also I inserted the MAF with the temp sensor nearest to the airbox. So I think I’m right there. Please any suggestions would help. My battery voltage was 11.8v at the time I performed DA2.